From 023bb638b28ba27dea0057c5bf4b370df8fd3cca Mon Sep 17 00:00:00 2001
From: Tim Schaub <tim.schaub@gmail.com>
Date: Wed, 18 Jul 2018 00:53:17 -0600
Subject: [PATCH] Call super before accessing this in raster source

---
 src/ol/source/Raster.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/ol/source/Raster.js b/src/ol/source/Raster.js
index b48e1ee9bf..d3436ff251 100644
--- a/src/ol/source/Raster.js
+++ b/src/ol/source/Raster.js
@@ -145,6 +145,7 @@ class RasterSource extends ImageSource {
    * @api
    */
   constructor(options) {
+    super({});
 
     /**
      * @private
@@ -239,8 +240,6 @@ class RasterSource extends ImageSource {
       wantedTiles: {}
     };
 
-    super({});
-
     if (options.operation !== undefined) {
       this.setOperation(options.operation, options.lib);
     }